from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Abnormal development or growth of tissues, organs, or cells.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Abnormal development of cells or tissue, often a precancerous stage of growth.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. abnormal development (of organs or cells) or an abnormal structure resulting from such growth
dys- + -plasia (Wiktionary)